Whether a 1.6 gallons per flush (GPF) or 1.28 GPF toilet is better depends on local water regulations and your priority for waste clearing force. 1.28 GPF toilets meet strict EPA WaterSense standards, consuming less water to lower municipal utility bills while utilizing advanced modern trapway designs that maintain strong flushing power. 1.6 GPF toilets offer a slightly higher volume of water per flush, which can provide extra security in households with very heavy usage patterns.
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